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Ethel Thompson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Minnehaha-County, South Dakota
Our Model Tree links this Ethel Thompson across the 1930 and 1940 US Censuses in Minnehaha-County, South Dakota (XGBoost, ~Confirmed) — first a daughter (b.~1924), then head of a 9-person household.
Age 16
b. ~1924
Female
Daughter
Born: South Dakota
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Minnehaha-County, South Dakota |
| Surname | Thompson |
| Given Name | Ethel |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | South Dakota |
| 1935 Residence (City) | Sioux Falls City |
| 1935 Residence (County) | Minnehaha |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same place |
| Birth State | South Dakota |
| Birth Country | United States |
| Birthplace (normalized) | south dakota |
| Township / Ward | Sioux Falls City |
| Est. Birth Year | ~1924 |
Household Members
Census records only state relationship to the household head.
Pairwise kinship is derived (~90–95% accurate), not recorded.
Step/blended families and boarders can break it.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Ethel | Age | Birth yr |
|---|---|---|---|---|
| Joyce Thompson | Daughter | — | 2 | ~1938 |
| Rose Thompson | Daughter | — | 9 | ~1931 |
| Donna Thompson | Daughter | — | 12 | ~1928 |
| Ruth Thompson | Daughter | — | 7 | ~1933 |
| Mary Thompson | Daughter | — | 6 | ~1934 |
| Ethel Thompson | Daughter | — | 16 | ~1924 |
| Milton Thompson | Head | — | 42 | ~1898 |
| Robert Thompson | Son | — | 14 | ~1926 |
| Frances Thompson | Spouse | — | 41 | ~1899 |
Census Appearances
1930
Minnehaha, South …
Daughter, age 6
Minnehaha, South Dakota · implied b. ~1924 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Ethel M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | South Dakota |
| Father's Birthplace | Iowa |
| Mother's Birthplace | South Dakota |
| Birth State | South Dakota |
| Birth Country | United States |
| Birthplace (normalized) | south dakota |
1940
Minnehaha-County, South …
Daughter, age 16
Minnehaha-County, South Dakota · implied b. ~1924 — 9 household members
| Surname | Thompson |
| Given Name | Ethel |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | South Dakota |
| 1935 Residence (City) | Sioux Falls City |
| 1935 Residence (County) | Minnehaha |
| Income (1939) | 0 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same place |
| Birth State | South Dakota |
| Birth Country | United States |
| Birthplace (normalized) | south dakota |
Model Tree
An inferred pedigree reconstructed from census links — up to 4 generations within the 1900–1950 window. Closer generations are built from household co-residence; deeper ones are bridged by following a relative to their own childhood census. Confidence compounds and weakens with each generation.
Our Model Tree links Ethel Thompson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Ethel Thompson
Daughter · 1940 · age 16 · b. ~1924 · South Dakota
★ You are viewing this record
Sibling
Rose Thompson
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Thompson
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joyce Thompson
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruth Thompson
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Thompson
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Donna Thompson
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Minnehaha-County, South Dakota
Open full size
1940 US Federal Census — Minnehaha-County, South Dakota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03864-00535)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Nadine Wagner | 17 | daughter | — | South Dakota |
| 42 | Donald Wagner | 12 | son | — | South Dakota |
| 43 | John Peterson | 58 | Head | Cooper | Norway |
| 44 | Marie Peterson | 59 | Wife | — | Norway |
| 45 | Donald Wenzel | 19 | Lodger | Bell Hop | South Dakota |
| 46 | Olaf Watne | 43 | Head | Laborer | South Dakota |
| 47 | Anna Watne | 36 | Wife | — | Minnesota |
| 48 | Leon Watne | 15 | son | — | South Dakota |
| 49 | Verona Watne | 11 | daughter | — | South Dakota |
| 50 | Donna Watne | 4 | daughter | — | South Dakota |
| 51 | Luciel Watne | 2 | daughter | — | South Dakota |
| 52 | Wilbur Bishop | 31 | Head | Laborer | South Dakota |
| 53 | Madeline Bishop | 27 | Wife | Waitress | South Dakota |
| 54 | Thomas Bishop | 2 | son | — | South Dakota |
| 55 | Augusta Bishop | 57 | Mother | — | Nebraska |
| 56 | Elmer Knudsen | 31 | Head | Truck Driver | South Dakota |
| 57 | Amanda Knudsen | 30 | Wife | — | South Dakota |
| 58 | James Knudsen | 1 | son | — | South Dakota |
| 59 | Gilbert Tripp | 41 | Head | Mechanic | Iowa |
| 60 | Ima Tripp | 38 | Wife | — | Iowa |
| 61 | Mavis Tripp | 16 | daughter | — | South Dakota |
| 62 | James Tripp | 13 | son | — | Minnesota |
| 63 | Hollis Morgan | 64 | Head | Glazier | Wisconsin |
| 64 | Alvina Morgan | 55 | Wife | — | South Dakota |
| 65 | Wendell Morgan | 22 | son | Laborer | South Dakota |
| 66 | Peter Kallemeyn | 43 | Head | Laborer | Minnesota |
| 67 | Henrietta Kallemeyn | 43 | Wife | — | Netherlands |
| 68 | Peter Kallemeyn | 15 | son | — | South Dakota |
| 69 | Lucretia Bond | 57 | Head | — | Norway |
| 70 | Norman Bond | 21 | son | Laborer | South Dakota |
| 71 | Lillian Bond | 14 | daughter | — | South Dakota |
| 72 | Milton Thompson | 42 | Head | Lard Refinery | Iowa |
| 73 | Frances Thompson | 41 | Wife | — | South Dakota |
| 74 | Ethel Thompson THIS PERSON | 16 | daughter | — | South Dakota |
| 75 | Robert Thompson | 14 | son | — | South Dakota |
| 76 | Donna Thompson | 12 | daughter | — | South Dakota |
| 77 | Rose Marie Thompson | 9 | daughter | — | South Dakota |
| 78 | Ruth Thompson | 7 | daughter | — | South Dakota |
| 79 | Mary Ann Thompson | 6 | daughter | — | South Dakota |
| 80 | Joyce Thompson | 2 | daughter | — | South Dakota |
Related Census Records
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 United States Federal Census (NARA). Our Model Tree links this person across census decades using XGBoost-based record linkage, with per-link confidence scores. Household corroboration strengthens the signal when co-residents appear on the same census pages in multiple years.
Source: National Archives and Records Administration (NARA)